Narrative:

I was departing VFR from austin airport, trying to maintain visual contact with the ground with an MVFR ceiling. I requested 1500 ft MSL on a departure heading of 060 degrees, proceeding outbound. I was trying to maintain FMC in order to identify ground landmarks since the aus VOR had been decommissioned. I did not realize when asking for 1500 ft MSL, and while maintaining VMC below the broken ceiling, that this was keeping me below the minimum of 1000 ft AGL in a congested area, as the airport is 640 ft MSL and the terrain rises on this ground track. I estimate I was at 750 ft AGL over the northwest part of the city. I should have climbed in IMC and not attempted VFR in marginal conditions.

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Original NASA ASRS Text

Title: A C182 ATP PLT DEPARTS AUS VFR WITH AN MVFR CEILING. HE RPTS THAT HE LATER DETERMINED THAT HE WAS ABOUT 750 FT AGL NEAR THE NW SECTION OF THE CITY DURING HIS DEP.

Narrative: I WAS DEPARTING VFR FROM AUSTIN ARPT, TRYING TO MAINTAIN VISUAL CONTACT WITH THE GND WITH AN MVFR CEILING. I REQUESTED 1500 FT MSL ON A DEP HDG OF 060 DEGS, PROCEEDING OUTBOUND. I WAS TRYING TO MAINTAIN FMC IN ORDER TO IDENT GND LANDMARKS SINCE THE AUS VOR HAD BEEN DECOMMISSIONED. I DID NOT REALIZE WHEN ASKING FOR 1500 FT MSL, AND WHILE MAINTAINING VMC BELOW THE BROKEN CEILING, THAT THIS WAS KEEPING ME BELOW THE MINIMUM OF 1000 FT AGL IN A CONGESTED AREA, AS THE ARPT IS 640 FT MSL AND THE TERRAIN RISES ON THIS GND TRACK. I ESTIMATE I WAS AT 750 FT AGL OVER THE NW PART OF THE CITY. I SHOULD HAVE CLBED IN IMC AND NOT ATTEMPTED VFR IN MARGINAL CONDITIONS.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.